“…The Batak community can also find the concepts of social arithmetic, comparison, clan genealogy, and geometric instruments in traditional clothing and houses (Saragih, Napitupulu, & Fauzi, 2017). In the Bugis Makassar cultural context, the application of ethnomathematics can bring about attitudes that are universally appropriate to people's customs and habits (Cheriani, Mahmud, Tahmir, Manda, & Dirawan, 2015). There are also buildings in the form of fortresses, palaces, pinisi boats, and weaving motifs in Bugis Makassar culture which includes mathematical elements.…”